Apparatus for the manufacture of ice



APPLICATION FILED JAN. l2 1920.

@12m/'rada Patented Oct. 19, 1920.

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Unirse STATES -THOMAS SHIPLEYLOF `YORK, PENNSYLVJANIA;

PATENT OFFICE.`

APPARATUS FOR THE MANUFACTURE OF ICE.

Specification of Letters Patent.

Patented oct. 19, 1920.

Application filed January 12, 1920. Serial No. 350,728.`

the body of water in the can to prevent im-V purities in the water from being incorporated in the ice during the freezing operation-the air for this purpose being ledr through a tube to a point at or near the bot* tom of the can, where it is discharged into the water in the can. Itis the preferred practice to lead the air tube, or blowing tube, as it is termed, rupon thef exterior of one of the sides of the can down from the top to the point at or near thebottom there of where it discharges into the can, and in order to protect the exposed portion of the blowing tube from injury due to careless handling, and for other reasons, there has been formed in the side of the can an lexternal groove in which the exposed. length of the blowing tube is received and, as it were, housed, so as not to protrude laterally beyond the outer face of the body of the can as shown in myV U. S. Patent No. 1,158,820 of October 26, 1915. The blowing tube at its ends is held securely in place in the groove-at its lower endby its fluid tight attachment to the body of thecan at the point where it enters thesame, and at its upper'eiid by the usual Vwrought iron band which encircles thetop of the can, eX- tending crosswise over the groove in which the blowing tube is seated and serving as a strap or plate to confine the tube therein. Owing, however, to theconsidei'able length of the exposed portion of the tube between its two ende-between and 4,15 feet, roughly speaking, according to the size of the canit has been found necessary, oi' de sirable, to provide some means for holding it in place at one or more intermediate pointsbetwecn its ends, .depending upon the length of the tube. To solder the tube to the can at these intermediate points is objectionable for various reasons, and, from causes not necessary here to specify, not infrequently results in the ripping or bursting of the tube. On the other hand, straps,

serving the same purpose kas `the topband so far, as holding the tube in place in the groove is concerned, form objectionablepro- Jections upon the exterior of the can. Itis my object to provide an elicient device for this purpose which shall'not be open to any of these objections. To rwhich end my proceed first to describe in connectionwith inf vention consists of the means which I shall the accompanying drawings forming part of n the specification, and .then to particularly in the claims;

In the drawings zl Figure 1 is a view of an ice-freezing can embodying my improvement, broken off at the .to H

Fig. 2 is an enlargedy vertical section through the air tube sidek ofthe can on line.

2 2, Fig. 1.L

Fi 3 is a cross section on line 3-,3, Fig. i

1 4 and 5 5, respectively, Fig. 2.

Figs. 3, 4;, 5 are on larger scale than Fig.

2 in order to show more point outmore Figs. 4 yand 5 are cross sections on lines The can shown in the drawingin connection with my improvement, is the form? of can illustrated in my Letters Patent N o. 1,158,320 hereinbefore mentioned. `Itvwill, however, be understood that my improvement is equally applicable to any otherform of freezing can provided with a blowingl tube contained in aniexternal groove on one of the sides of the can. f i i A is the sheet nietal can of any preferred construction and of rectangular cross section in the present instance.y B is the wrought iron reinforcing band yat'the top of the can. C is the vertical eXternalblowing tube-receiving groove of approximately U or V-cross section formed in one of ythe f sides of the can, and extending from the top to a point near the bottoni of the can.v

D is the blowing tube, preferably of semihard brass, inserted in the groove Gironi the top of the can, between the band B and.

thegrooved side ofthe can and extending `down inthe groove and through an opening in the lower end of the latter into/the inside of the can, with its beveled lower end near enough to the bottom of the'can to insure proper circulation of the air discharged from it. A.t the point where the tube passes through the wall at the lower end-of the rgroove from the outside to the inside of thc can, the tube and can are soldered together to make a fluid tight joint. The portion of the air tube which lies under the band B is cylindrical, and in practice is roamed out on a taper to receive the usual air supply elbow nozzle indicated in dotted lines in Fig. 2. Below this point the tube preterably is ot such cross-sectional dimensions relatively to the depth ol the groove that it is wholly contained within the groove, and is preferably 'flattened on its exposed side as shown.

As thus lar described there is nothing new in the can over and above what is to be found in, my Inatont No. 1,158,320, hereinbei :tore mentioned. I come now to the features which characterize my present improve* ment.

In order to secure the blowing tube from lateral displacement, I prov`de at one or more points in its length, between top where it is conlined in place in the groove by the band B, and its lower end where. it is soldered to the can at the point of its passage through the end of the groove into the inside ot the can, a retaining sleeve IC preferably of sott brass, which, as shown in Figs. 2 and 3, is of a cross-section similar to the blowing tube but oi" sufficiently greater internal dimensions to receive and tit around the latter Without unduly binding it. rIlhe sleeve, seated in the groove in the can at the proper point, is there secured in place, preferably by soldering to the body oic the can along the outer edges or the groove and the tapered side of the sleeve, as indicated at f.' The sleeve preferably is oi such di mensions relatively Vto the depth oit the groove in which it is held that exposed side will not proycct laterally beyond the groove, thus shielding and proi'zecting` it from accidental iniury in handling the can.

The blowing tube being of lless dimensions than the sleeve through which it passes, will be thus safely held against lateral displacement and retained within the compass oit the groove. A t the same time the lit between the tube and its encompassing` sleeve is suihciently loose to permit perfect freedom of movement to the tube, and to compensate and allow for variations in the e1;- pansion and contraction between the can and the tube, due to the difference in the metal of which they are made.

The upper end of the blowing tube into which thc air blowing elbow nozzle is inserted is liable to be swaged out of shape by rough handling of the nozzle in removing it Vfrom the tube or by the bobbing up Lof the can due to the buoyant effect oi the brine in which it is immersed, resulting in sharp contact of the elbow nozzle with the tank cover. To remedy this trouble I provide the upper cylindrical portion of the blowing tube with a reinforcing errule which closely surrounds and is sweatcd or otherwise tightly secured upon the tube. The increase in the depth of the tube receiving groove due to the employment of the sleeve is sutlicient to accommodate 'thc ferrule B also without protruding laterally from the groove so as to bind against the band `B which covers it. The ierrule (l thusserves not only to reinforce the upper end of the blowing tube, but also to st.;1 t. u it and prevent it from rattling or shel in the groove. VThe blowing tube, ind is held fast only at its lower end wl is soldered to the can, and above that point throughout its length it is tree to move in the groove independently oi the can, and the devices which retain it in the groove, 'to compensate i'or difference in contraction and eX- pansion due to the difference in the metals of which they are composed.

I have shown but one retaining sleeve IG in the drawing, but of course there may be as many as desired, placed at intervals apart on the blowing tube as the length oli the blowing tube and other considerations may demand.

I-Iaving .described my improvement and the best way known to me of carrying the same into practical effect, what I claim herein as new and of my own invention and desire to secure by Letters Patent is as i"o`l lows 1. A freezing can having in one ot its sides an external vertical groove, a retaining sleeve containedr within the compass ot, and secured in, said groove at a point int` mediate the ends of the latter, and a blowing tube contained in said groove and cxtending through and loosely fitting within said sleeve, substantially as and for the purposes hereinbefore set forth. l

2. In combination with the elements s acciied in claim l, a band at the top of the can extending crosswise over the groove and covering the upper portion of the blowing tuhc contained therein, and a reinforcing Vferrule interposed between the said band and blowing tube and encircling and tightly scoured to the latter under the arrangement and for the purposes liereinbcio're set iorth.

In testimony whereof I aiiX my signature.

THOMASSHIPLEY. 

